Hi Gene,
very interesting piece. Gustav is correct, the blade have a Lombok touch. Can you provide a picture how the blade fits inside the sheath? Pendokok look like a Sumbawa one. See here:
http://www.vikingsword.com/vb/showthread.php?t=11474, look posts 2, 5 & 6. Never have seen a blade like this with harpoon like hooks.
Regards,
Detlef